Imagine you're reading a csv file with 1000 columns, of which 990 are doubles. It would be useful if print.col_spec() could automatically generate a spec with default = col_double(), and then only explicitly label the columns that were different from that default.
Imagine you're reading a csv file with 1000 columns, of which 990 are doubles. It would be useful if
print.col_spec()could automatically generate a spec withdefault = col_double(), and then only explicitly label the columns that were different from that default.